Re: Does JZOS DFSORT get offloaded to a zIIP?
On 14/10/2016 9:10 PM, Kirk Wolf wrote: JZOS does have native code (not byte code) that is part of the JVM which is zIIP eligible. Right. So the JNI C/C++ RTL functions run on a zIIP but as I thought DFSORT running in a spawned process does not. DFSORT could have been executed with a simple link to the program so I'm guessing that spawning a process was a design feature so it wouldn't run on a zIIP? The JZOS DFSORT wrapper spawns DFSORT in a separate process, which is not part of the JVM and is therefore not zIIP eligible. Kirk Wolf Dovetailed Technologies http://dovetail.com On Fri, Oct 14, 2016 at 7:54 AM, Martin Packer <martin_pac...@uk.ibm.com> wrote: DFSORT is not executing as bytecode in a JVM so no. Martin Packer, zChampion, Principal Systems Investigator, Worldwide Cloud & Systems Performance, IBM +44-7802-245-584 email: martin_pac...@uk.ibm.com Twitter / Facebook IDs: MartinPacker Blog: https://www.ibm.com/developerworks/mydeveloperworks/blogs/MartinPacker Podcast Series (With Marna Walle): https://developer.ibm.com/tv/mpt/or https://itunes.apple.com/gb/podcast/mainframe-performance- topics/id1127943573?mt=2 From: David Crayford <dcrayf...@gmail.com> To: IBM-MAIN@LISTSERV.UA.EDU Date: 14/10/2016 13:49 Subject: Does JZOS DFSORT get offloaded to a zIIP? Sent by:IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> I'm guessing the answer is no judging by the fact that JZOS spawns a jdfsort UNIX process to do the sort and if it did everybody would just write Java wrappers to sort data sets thus reducing the cost of running DFSORT. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Does JZOS DFSORT get offloaded to a zIIP?
JZOS does have native code (not byte code) that is part of the JVM which is zIIP eligible. The JZOS DFSORT wrapper spawns DFSORT in a separate process, which is not part of the JVM and is therefore not zIIP eligible. Kirk Wolf Dovetailed Technologies http://dovetail.com On Fri, Oct 14, 2016 at 7:54 AM, Martin Packer <martin_pac...@uk.ibm.com> wrote: > DFSORT is not executing as bytecode in a JVM so no. > > Martin Packer, > zChampion, Principal Systems Investigator, > Worldwide Cloud & Systems Performance, IBM > > +44-7802-245-584 > > email: martin_pac...@uk.ibm.com > > Twitter / Facebook IDs: MartinPacker > > Blog: > https://www.ibm.com/developerworks/mydeveloperworks/blogs/MartinPacker > > Podcast Series (With Marna Walle): https://developer.ibm.com/tv/mpt/or > > https://itunes.apple.com/gb/podcast/mainframe-performance- > topics/id1127943573?mt=2 > > > > From: David Crayford <dcrayf...@gmail.com> > To: IBM-MAIN@LISTSERV.UA.EDU > Date: 14/10/2016 13:49 > Subject:Does JZOS DFSORT get offloaded to a zIIP? > Sent by:IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> > > > > I'm guessing the answer is no judging by the fact that JZOS spawns a > jdfsort UNIX process to do the sort and if it did everybody would just > write Java wrappers to > sort data sets thus reducing the cost of running DFSORT. > > -- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > > > > Unless stated otherwise above: > IBM United Kingdom Limited - Registered in England and Wales with number > 741598. > Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU > > -- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Does JZOS DFSORT get offloaded to a zIIP?
DFSORT is not executing as bytecode in a JVM so no. Martin Packer, zChampion, Principal Systems Investigator, Worldwide Cloud & Systems Performance, IBM +44-7802-245-584 email: martin_pac...@uk.ibm.com Twitter / Facebook IDs: MartinPacker Blog: https://www.ibm.com/developerworks/mydeveloperworks/blogs/MartinPacker Podcast Series (With Marna Walle): https://developer.ibm.com/tv/mpt/or https://itunes.apple.com/gb/podcast/mainframe-performance-topics/id1127943573?mt=2 From: David Crayford <dcrayf...@gmail.com> To: IBM-MAIN@LISTSERV.UA.EDU Date: 14/10/2016 13:49 Subject: Does JZOS DFSORT get offloaded to a zIIP? Sent by:IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> I'm guessing the answer is no judging by the fact that JZOS spawns a jdfsort UNIX process to do the sort and if it did everybody would just write Java wrappers to sort data sets thus reducing the cost of running DFSORT. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Does JZOS DFSORT get offloaded to a zIIP?
I'm guessing the answer is no judging by the fact that JZOS spawns a jdfsort UNIX process to do the sort and if it did everybody would just write Java wrappers to sort data sets thus reducing the cost of running DFSORT. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
